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习题练习：Physics Unit19: DC Circuits
本习题练习试卷来源于51fly国际课程 (https://51fly.win)， 为试卷打印版，您也可以在网站平台(https://autoconfig.51fly.win/)直接 访问本试卷的在线电子版并查看正确答案与解析，搜藏保存任意题目到收藏集。 访问方法: 平台首页左上角"通过试卷号快速访问"输入试卷号 77，并点击直达试卷；或浏览器地址栏内直接输入本试卷链接 https://autoconfig.51fly.win/test77.html  教师使用本平台可以抽题组卷或一键复制他人试卷，布置为在线考试或在线作业，全自动判分成绩一键排序导出，省时省力。
 作者: physics  发布日期: 2022-08-17 15:49    总分: 102分  得分: _____________

答题人: 游客未登录  开始时间: 22年08月17日 12:52  切换到: 整卷模式

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1#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  The potential difference between the terminals of a battery, w3b5xozh+pc oz-r84zx hen no current flows to an external circuit, is referrorbo+zpxz 5 843 h-xzced to as the

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2#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  The potential difference be wz-j5dced+y5:r0d q6kemgt ; tween the terminals of a battery, when current flows to an external circuit, is referred tomrjeq0c5z;w:dt+dkg6- ye 5d as the

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3#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  When two or more resistors a5 ; wa9c**dls ffjn;zore connected in series to a battery

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4#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  When resistors are connei4siqi t g7670;djgmno))pzy cted in series,

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5#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  Three identical resistorsl/gsdhwsj5rc 9bc43 , are connected in series to a battery. If the current of 12 A flows froc/3cgd49bw ssrl,5 hjm the battery, how much current flows through any one of the resistors?

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6#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  Three identical resistors are connected in series to a 12-V battery. What is thj,pmi-qgl l,y (bz n;+e voltage(;l,qi , mz lpbjy-ng+ across any one of the resistors?

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7#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  You obtain a 100 $\Omega$ light bulb and a 50 $\Omega$ light bulb. Instead of connecting them in the normal way, you devise a circuit that places them in series across normal household voltage. Which statement is correct?

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8#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  As more resistors are added ;ks;wghf3 r .w:i. ;mxawl ki/x/ ql)iin series to a constant voltage source, the power supplied l xlr)ig/;k iawhfmi.wxs; .3w;qk:/ by the source

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9#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  When two or more resistors are connecy *gw acl0v1(vted in parallel to a battery,

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10#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  When resistors are connected in parallel, we can be c2r+8zbyo1rw 7khn ;ph ertain that

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11#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  Three identical resistors are connected in parallel to a 12-V batterq etz9/ 5q)xj,rs9rehy. What is the voltage of an)zr rh / ,xqese599jqty one of the resistors?

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12#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  Three identical resistors are connected in pad;hy lfg87 f1du,4rswhk k4y;rallel to a battery. If the current of 12 A flows from the battery, how much current flows through any one of the ry hfrlyd u448fg khd;s;,k7w1esistors?

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13#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  The lamps in a string of Chr,jh, ry c-/rovmsw5fnoux*g+*byq. ; istmas tree lights are connected in parallel. What happens if one lamp burns out? (Assume negligible resistance in the wires lnrwsgb-, o5y.h*y mq ruv,*f c+xj/;oeading to the lamps.)

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14#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  As more resistors are added in parallel to a constaszm/:yln.b,uy 8/5u87 yshn qtb)kb i nt voltage source, the power supplied by the soursz/ n7 bb88qy.sy5h)by/:n ,l mutukice

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15#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  Consider three identical resistors, each of resistance R. The maxi,aqo r w kr ng6u,tx *pc/r746k7f+uzfmum power each can dissipate is P. Two of the resistors are conne/, zfuq4 *rag7r,6kuc6xpf+ 7wrtk nocted in series, and a third is connected in parallel with these two. What is the maximum power this network can dissipate?

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16#
 
问答题 ( 1.0 分) 切至整卷模式 搜藏此题  
State Kirchhoff's junction rulc kmec, y0nln2409uo ni* h:vfe.
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17#
 
问答题 ( 1.0 分) 切至整卷模式 搜藏此题  
State Kirchhoff's looxm.mr 4y, 4qx.a*arj ieoxn6 *p rule.
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18#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  Kirchhoff's loop rule is 2mn fbcxgk,n bex3)w3y 2v .g5an example of

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19#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  Kirchhoff's junction rule is an examp.mds g qj.c9g8*g )g0/eeps hrle of

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20#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  Which of the equations here is valid for the ci+ 8t,yw5o-sw(bttkxf rcuit shown?


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21#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  If you connect two identical storage batteries together in series ("+" to "-"g nt icy (i yvdpa m.qrwl;cb4)89e,/( to "+" to "-"), and place the p; wvdcg ytn8(ic4,lmq .a)iyb9r/ (em in a circuit, the combination will provide

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22#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  If you connect two identical storage batteries together in series ("+" to "-" t9ejg*mp1l(9b0clwe +k*e ka zo "-" to "+"), and place them in a circuit, the combination will provi e* kz1(e 9+ 0egb9lpwca*ljmkde

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23#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  If you connect two identical storage batteries together in parallel, and pfjvfpyqi:;vhws. md96 f )3b: lace them in a circuit, the combinationjqf6: .:;d)f9ibp wyhs3 v mvf will provide

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24#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  When two or more capacitors are connected in series to a batterld s*be*6/)pxx 1o e/h *x)ne lbmfye4y,

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25#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  As more and more capacitors are connected in seriextx9:jp* r o(hs, the equivalent capacitance of the combinatioxr(:jo9p* h xtn increases.

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26#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  Three identical capacitors are connected in series to a battery. Ijd+q-im o++e uf a total charge of Q flows from the battery, how much cd + +ujmqo-e+iharge does each capacitor carry?

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27#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  When two or more capacitors are cpr4u d;q. tj.yonnected in parallel to a battery,

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28#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  As more and more capacitors are connected in parallel, tht e*zk l thjs933t-qe((fv k+pe equivalent capacitance of the co(p3qk9tl thf e+ j*k -s3zevt(mbination increases.

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29#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  Three identical capacitors are connected in pp/ kl55hq/nfuwgl 2;u ccqfl/4,s ; ckarallel to a battery. If a total charge of Q flows from the lfqnsfk5uu;/; p54,/h lwccq2lgk/c battery, how much charge does each capacitor carry?

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30#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  What is the unit for the q96w/ neo2ztrk uantity RC?

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31#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  A resistor and a capacitor are conne r( blk2prz(l7,ncqaa+i,0,n hsw-vhcted in series to an ideal battery of constant terminal voltage. At the moment contact is made with the batte+(c( b,h sp-nrhlrv, iw2a7z 0,l qnkary, the voltage across the capacitor is

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32#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  A resistor and a capacitor are connectedp sy /em rmrh4r47-0k) umnj,r in series to an ideal battery of constant terminal voltage. At the moment contact is made with the battery, the voltage across the resi,nm)me4rmyupr 0/jh4r - ksr7stor is

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33#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  A resistor and a capacitor are connected in series to 6utd d1ap1*5a 4wyd*k a)hg xoan ideal battery of constant terminal voltage. When this system reaches ik 4 od d*yx1pa)g6wdtu*1h5aats steady-state, the voltage across the resistor is

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34#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  An ideal ammeter shoubpvc 0. -jbi5 yk.r0znld

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35#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  A galvanometer can be converted to an ammeter by thep 4lwq n ,lisx)oc+n. +5bh3bo addition of a

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36#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  A current reading is obtainedry/ og8n0 c4+ j1nflrx by properly placing an ammeter in a circuit consisting of one resistor and /rn 1l4rj+yg80 nfcxoone battery. As a result,

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37#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  Decreasing the resistance of an ammeter's s5.u/qbm1mmxvy9w4gp hunt resistance

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38#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  In order to construct ufonrf+ u(2+i hot9 x2a voltmeter from a galvanometer, one normally would

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39#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  Increasing the resistance of a voltmeter's series rejs cjg8y2wt rqa 0m ag9)8w5p9sistance

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40#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  A voltage reading is obtained by placins:j+lr/t xan* g a voltmeter across a resistor. What happens to the total current flowing in the circuit as a result a/srl+ *x :ntjof this action?

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41#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  An unknown resistor is56dcewyuj 5i;v i4zth a.r7-v wired in series with an ammeter, and a voltmeter is placed in parallel across both the resistor and the ammeter. This network i4aed5v7.h u6 5-yrj w;i zvtcis then placed across a battery. If one computes the value of the resistance by dividing the voltmeter reading by the ammeter reading, the value obtained

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42#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  An unknown resistor is wired in series wi2qje zl (6tnw9th an ammeter, and a voltmeter is placed in parallel across the resistor only. This network is then connected to a battery. If one computes the value of the resistancn ljq z(9etw62e by dividing the voltmeter reading by the ammeter reading, the value obtained

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43#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  Four 20 $\Omega$ resistors are connected in series. What is the equivalent resistance?

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44#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  Four resistors of 12, 3.0, 5.0, and 4u)9 wpsv ef f-6s5nvi9.0 $\Omega$ are connected in series. A 12-V battery is connected to the combination. What is the current through the battery?

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45#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  Three resistors of 12, 12/q 6xbp7ee7 0hs q en)bub7gw3, and 6.0 $\Omega$ are connected in series. A 12-V battery is connected to the combination. What is the current through the battery?

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46#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  Three resistors of 12zu,-63p c ucxe, 12, and 6.0 $\Omega$ are connected in parallel. A 12-V battery is connected to the combination. What is the current through the $6 \; \Omega$ resistor?

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47#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  A 14-A current flows into a series;wedlpm1-i -g combination of a 3.0 $\Omega$ and a 4.0 $\Omega$ resistor. What is the voltage drop across the 4.0 $\Omega$ resistor?

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48#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  A 14-A current flows into a series combin .u vym(euk;w2t)6 pvnation of a 3.0 $\Omega$ and a 4.0 $\Omega$ resistor. What is the voltage drop across the 3.0 $\Omega$ resistor?

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49#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  A 22-A current flows into a parallel combination of 4.0 :8-bbrx+eqjw $\Omega$, 6.0 $\Omega$, and 12 $\Omega$ resistors. What current flows through the 12 $\Omega$ resistor?

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50#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  A 22-A current flows into a parallel combination of a :v+ c./ab 9kspo:hd pjmwa;m)4.0 $\Omega$, 6.0 $\Omega$, and 12 $\Omega$ resistors. What current flows through the 6.0 $\Omega$ resistor?

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51#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  A 22-A current flows into a parall.n xrkjhpn +k*)t7o1gel combination of a 4.0 $\Omega$, 6.0 $\Omega$, and 12 $\Omega$ resistor. What current flows through the 4.0 $\Omega$ resistor?

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52#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  A 6.0 $\Omega$ and a 12 $\Omega$ resistor are connected in parallel to a 36-V battery. What power is dissipated by the 6.0 $\Omega$ resistor?

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53#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  The following three appliances are connect(l73 u 4pq vnssh.d(gied to a 120-V circuit: 1200-W toaster, 650-W coffee pot, and 600-W microwave. If all were operated at the same time what total current would they draw7l ((4ugshq np3vds i.?

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54#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  What is the maximum numbeh(+9 q ; u*d6zlmu* aqcq-mgjcr of 100-W light bulbs you can connect in parallel in a 120-V circuit without tripping a 20-A cir ucd6- mmu;qqhlq**( +g 9zacjcuit breaker?

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55#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  A combination of 2.0 k u9hdd,uo ) frix3is qfm.v: /lj0(s9$\Omega$ resistor connected in series with 4.0 $\Omega$ resistor is connected in parallel with a 3.0 $\Omega$ resistor. What is the equivalent resistance?

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56#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  Two 4.0 $\Omega$ resistors are connected in parallel, and this combination is connected in series with
3.1 W. What is the effective resistance of this combination?

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57#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  A 2.0 $\Omega$ resistor is in series with a parallel combination of 4.0 $\Omega$, 6.0 $\Omega$, and 12 $\Omega$ resistors. What is the equivalent resistance of this combination?

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58#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  Two resistors of 15 and 6gn cic059ur r30 $\Omega$ are connected in parallel. If the combination is connected in series with a 9.0-V battery and a 20 $\Omega$ resistor, what is the current through the 15 $\Omega$ resistor?

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59#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  Three resistors of 4.0, 6.0, and 10.0 gkt:.*7nj o-zc. u ibx$\Omega$ are connected in parallel. If the combination is connected in series with a 12.0-V battery and a 2.0 $\Omega$ resistor, what is the current through the 10.0 $\Omega$ resistor?

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60#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  Two resistors of 5.0 anb sz)0u ty*es7d 9.0 $\Omega$ are connected in parallel. A 4.0 $\Omega$ resistor is then connected in series with the parallel combination. A 6.0-V battery is then connected to the series-parallel combination. What is the current through the 4.0 $\Omega$ resistor?

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61#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  Two resistors of 5.0 asawfc oodey264h2y.-0 nh/ kynd 9.0 $\Omega$ are connected in parallel. A 4.0 $\Omega$ resistor is then connected in series with the parallel combination. A 6.0-V battery is then connected to the series-parallel combination. What is the current through the 5.0 $\Omega$ resistor?

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62#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  Two resistors of 5.0 and 9.0 hse: ,cwz2.m0oa4amd;mcd 5m $\Omega$ are connected in parallel. A 4.0 $\Omega$ resistor is then connected in series with the parallel combination. A 6.0-V battery is then connected to the series-parallel combination. What is the current through the 9.0 $\Omega$ resistor?

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63#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  A 3.0 $\Omega$ resistor is connected in parallel with a 6.0 $\Omega$ resistor. This combination is connected in series with a 4.0 $\Omega$ resistor. The resistors are connected to a 12-volt battery. How much power is dissipated in the 3.0 $\Omega$ resistor?

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64#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  What is the total resistance of the circuit in Fig. 19-2ct1srlz3 /w d6?


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65#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  If $E = 40 \; V$, what is the voltage on R1 in Fig. 19-2?


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66#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  If $E = 20 \; V$, what is the current through $R_3$ in Fig. 19-2?


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67#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  If 1.5 A flows throurhg gju-ok;/ ctau+t1df5 0m* gh $R_2$, what is $E$ in Fig. 19-2?


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68#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  What is the total resistance of the circuit in Fig/1mg(ugbc v. u1o3 g y5e1jusm1,vmow . 19-3?


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69#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  If $E = 100 \; V$, what is the voltage across $R_5$ in Fig. 19-3?


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70#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  If $E = 4.0 \; V$, what is the current through $R_6$ in Fig. 19-3?


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71#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  For the circuit in Figo-6 daoz liui:-el)9ui5r i 2b. 19-4, determine the current in the 1 $\Omega$ resistor.


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72#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  For the circuit in Fig. 19-4, deterutt.q ).uos)pn ujvw 44k z-1amine the current in the 3 $\Omega$ resistor.


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73#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  For the circuit in Fig. 19-4, determine the current in thkma0:wxmonxv 57 v6,ne 4 $\Omega$ resistor.


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74#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  What is the potential of f 9z +vs5.p:) w*uypahhxc3vwpoint A relative to point C in Fig. 19-5?


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75#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  What is the potential of; jptek.,v5qa q2a5 h. -frzys point B relative to point C in Fig. 19-5?


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76#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  What is the potentialf0ds4wg3j csr 41;r nv))c quu ak)kn2 of point D relative to point C in Fig. 19-5?


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77#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  What current flows fromajnyaajq 38:(sq:g s 3 the battery in Fig. 19-5?


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78#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  What is the potential drop from point A to a okb,g (yfdbn (.q,3k26zxv wpoint B in Fig. 19-5?


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79#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  Determine the current in t p+ wia4epjnns4p 4ar2c/:ae;he 7 $\Omega$ resistor in Fig. 19-6.


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80#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  Determine the current in the ceoy tv5 gm.:/8 $\Omega$ resistor in Fig. 19-6.


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81#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  Determine the current i h;a4 x vlbw)k.1ue7ozn the 4 $\Omega$ resistor in Fig. 19-6.


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82#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  What current flows in the 12d9 2c74p:hpk0 izfbn9n kdf i9 $\Omega$ resistor in Fig. 19-7?


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83#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  What current flows i4ei+i qr z.8ahn the 18 $\Omega$ resistor in Fig. 19-7?


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84#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  What current flows in the solid wire connecting the upper left and lower left crzo /rt/r3/8 dpe n0ilorn0/il roerprtnd83z// ers?

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85#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  Four 16 mF capacitors are cif+p 31n(lx ifrw,3 rtonnected in series. The equivalent capacitance of this rf(r pi+i 3 x1nl,f3twcombination is

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86#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  5.00 mF, 10.0 mF, and 50.0 mF capacitors are connected in series across m(p8 *lia qe-(r9g- ynn xk,yda 12.0-V battery. How mu (-pirmaygx8*qd,ly9k e(nn-ch charge is stored in the 5.00-mF capacitor?

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87#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  5.00 mF, 10.0 mF, andbc eu2rs.*f+g/ xo: zf 50.0 mF capacitors are connected in series across a 12.0-V battery. What isurgc.bz /2:so+ ffex* the potential difference across the 10.0-mF capacitor?

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88#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  A 1.0-mF and a 2.0-mF capacitor are connected i(9binn+ak:d)qw+y7j niz(o e n series across a 3.0-V battery. What is the voltage acr+ dw7kj:n(9b n+(e)on iiqzayoss the 1.0-mF capacitor?

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89#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  A 1.0-mF and a 2.0-mF capacitor auu;do z/dj*w 3re connected in series across a 3.0-V battery. What is the voltage across the 2.0-mFdd*ojz/u;u w3 capacitor?

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90#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  1.0 mF, 2.0 mF, and 3.0 mF capacitors are como9 1f m5*l8wgy4af 7ziy0+al haf t0snnected in parallel across a 24-V battery. How much energy is stored in this combination when the capacitors are fuly 87 *w0+h am4maftslalfiz1yof05g9ly charged?

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91#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  Capacitances of 10 mF and 20 mF are connected in parallel, and this pair is je d f-:09ulbkthen connected in series with a 30-mF capacitor. What is the equivalent capacitance of this arrab0f-e u:ljkd9 ngement?

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92#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  Two capacitors of 6.00 mF and 8.00 mF are coti 3x*ljxaz7i,g , .njnnected in parallel. The combination iitxl7z ,,3 *n ix.jjgas then connected in series with a 12.0-V battery and a 14.0-mF capacitor. What is the equivalent capacitance?

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93#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  Two capacitors of 6.00 mF and 8.00qb 4/)+ kwjxbw mF are connected in parallel. The combination is then con 4kqjx/)b+ bwwnected in series with a 12.0-V battery and a 14.0-mF capacitor. What is the charge on the 6.00-mF capacitor?

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94#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  Two capacitors of 6.00 mF and 8.00 mF are connected iny)i.q066anckjzvc 2)o l s ,iz parallel. The combination is then connected in series with a 12.0-V battery and a 14.0-mF capacitor. What is t 0vokc. i,)6ys6qjnizl )za2che voltage across the 6.00-mF capacitor?

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95#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  A 2.0-mF capacitor is charged through a 5rezgh 42fot*8oz 1mn;0 $k\Omega$ resistor. How long does it take for the capacitor to reach 90% of full charge?

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96#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  A 2.0-mF capacitor is charged to 12 V and then uh-f3y /t1dm3:foc3s/r tnjy gsm6n;discharged through a $4.0 \times 10^{6} \; \Omega$ resistor. How long will it take for the voltage across the capacitor to drop to 3.0 V?

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97#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  A 4.0-MW resistor is conb kcr9 i/5-xsbbg;zx) nected in series with a 0.50-mF capacitor. The capacitor is initially uncharged. The RC combination is charged b9 xbb/kz x-b)cgri s5;y a 9.0-V battery. What is the change in voltage between t = $RC$ and t = $3RC$?

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98#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  A 4.0-mF capacitor is chaxengr q -(b47irmv/ :rmj/5yr rged to 6.0-V. It is then connected in series with a 3erj/b5x7ym/imrr( :vg4-n q r.0 $M\Omega$ resistor and connected to a 12-V battery. How long after being connected to the battery will the voltage across the capacitor be 9.0 V?

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99#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  A galvanometer has an internal w g g.ghc 051h0yplkn6resistance of 100 $\Omega$ and deflects full-scale at 2.00 mA. What size resistor should be added to it to convert it to a milliammeter capable of reading up to 4.00 mA?

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100#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  A galvanometer has a coil with ub-a6-c 8fh g1y a9ybga resistance of 24.0 $\Omega$. A current of 180 mA causes full-scale deflection. If the galvanometer is to be used to construct an ammeter that deflects full scale for
10.0 A, which resistor is required?

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101#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  A galvanometer has an internal dmt.)jw-nn t+resistance of 100 $\Omega$ and deflects full-scale at 2.00 mA. What size resistor should be added to it to convert it to a millivoltmeter capable of reading up to 400 mV?

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102#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  A galvanometer with a coil resizvn yjuv+ c5b m06,jbyjt0 31pstance of 40.0 $\Omega$ deflects full scale for a current of 2.0 mA. What series resistance should be used with this galvanometer in order to construct a voltmeter that deflects full scale for 50 V?

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